Cyano with no nutrients?

[Proteus]

Originally Posted by Arok3000

I had a bit of a cyano problem and a lot of a caulerpa problem.
My tests indicated zero on everything, but I doubted them and bought new kits just to find zero across the board.
Ended up swapping my old t5's out for LED and the problems cleared up quickly.

Since you're already running a Radion my circumstances don't really apply to you and I'm just consuming bandwidth. But maybe too much sunlight or red from the Radion?

Yeah I thought about the light as it didn't happen till I got to 80%. Ill wipe it off the board and see what happens